I agree they do. However, lots of people no longer have just the dad working. Mum needs to work as well just to get by. And those goods are created oversees and bought for much lower prices. And -last but not least- all those goods are purchased using debt much more than in the 60's/70's.
I find it shocking the US now has more people on foodstamps than people in fulltime jobs. The Bureau of Labor Statistics (BLS) reports there are 97,180,000 full time workers in the private sector. But there are 103.4 million people currently enrolled in any one of 15 subsidized federal food assistance programs. It saddens me to see this.